Record US semiconductor breaks 7 eV barrier to supercharge jets, EVs - Interesting Engineering

A 7 eV bandgap leapfrogs the entire SiC, GaN, and Ga2O3 generational stack, pushing power semiconductor breakdown voltage and thermal limits into a new regime. For jet engines, electric propulsion modules can now survive extreme thermal zones; for EVs, 800V+ inverter efficiency jumps another notch, compressing charge times to minutes. The chain reaction propagates upstream: epitaxial growth, substrate matching, and defect control must be re-engineered at the 7 eV scale. Downstream, packaging, thermal interfaces, and driver ICs face synchronous redesign. On compliance, Washington will almost certainly extend its 2022 chip export-control logic to the materials level—a far more lethal restriction than device-level bans. No second country possesses equivalent bandgap manufacturing capability, creating extreme single-point dependency risk. In the competitive arena, Wolfspeed, Infineon, and Navitas will accelerate Ga2O3 and diamond roadmap hedges within 12 months. Japan's JST-led gallium oxide program will likely receive supplemental funding. SiC lines in Taiwan, China and mainland China face widening generational gaps, though packaging and system integration retain a narrow window. 12-to-24-month outlook: aerospace certification breaks first; EV volume production points to 2027. The true long-tail effect: once 7 eV materials lock into design platforms, the existing SiC and GaN market faces dimensional-attack disruption.